we always want sources of org.objectteams.*
diff --git a/plugins/org.eclipse.objectteams.runtime/build.properties b/plugins/org.eclipse.objectteams.runtime/build.properties
index f1ac3c5..a32c830 100644
--- a/plugins/org.eclipse.objectteams.runtime/build.properties
+++ b/plugins/org.eclipse.objectteams.runtime/build.properties
@@ -5,5 +5,6 @@
 bin.includes = META-INF/,\
                .,\
                plugin.properties,\
-               about.html
+               about.html,\
+               src/org/objectteams/
 javacProjectSettings = true